The proton exchange membrane fuel cell has the advantages of being lightweight, efficient, high specific power, high energy conversion rate, low starting temperature and environmentally friendly. It is an ideal power source for new energy vehicles and portable electronic products, and it is inseparable from this. Polytetrafluoroethylene proton membrane material.
As the core component of PEMFC, the performance of proton exchange membrane has a decisive impact on the performance, life, cost, etc. of PEMFC.
The earliest proton exchange membrane used in fuel cells was the polystyrene sulfonate used in the fuel cells developed by General Electric Company (GE) for NASA as a power source for the Gemini (Gmini) spacecraft. acid film.
However, this proton exchange membrane has poor stability and cannot be applied on a large scale.
Polytetrafluoroethylene proton membrane is a composite membrane using perfluorosulfonic acid material and polytetrafluoroethylene (PTFE). PTFE is the microporous medium for reinforcement, and the perfluorosulfonic acid material is in the micropores. Form proton transfer channel.
This composite membrane can improve the mechanical strength and stability of the membrane, and the membrane can be made very thin, reducing the amount of perfluorosulfonic acid material, lowering the cost of the membrane, and improving the proton conductivity of the membrane.
The polytetrafluoroethylene proton membrane produced has strong hydrophobicity, chemical resistance, waterproofness and low wind resistance, and can achieve high dust removal efficiency. For some extremely small particles with a diameter of 0.1um-0.3um For particles, the filtration level can reach H13-U16.
In addition, biaxially oriented film can undoubtedly achieve ultra-low emissions in intercepting various types of dust generated during the production process of the company, and it fully complies with current environmental protection standards.
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